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Biton

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I used this www.unlock-sony.com with success. had the code after about 3 days, no need of using usb cables or to download funny programs.
the only thing was they send me 4 codes; CCK - NCK - NSCK & SPCK
but they forgot to tell me which of the 4 codes to use to unlock the x10i. but i found that answer (NCK code) on the forum.xda-developers.com site.
after inserting the non supported network SIM card and typing in the NCK code and all was fine. a well spend £28
many thanks,Amsterdam, Netherlands

All Networks, Factory Code

Christos V.

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Hello from Cyprus.
I am Chris and whatever i say about your service, it will not express my real feelings and the appreciation i have for you guys. I tried FOUR(4) different services to unlock my Vivaz but my unlocking was done only when i found this website on a google search and i was not sure if they are real. I was confident enough to try it because of the paypal payment.
I received the codes in less than 3 days time with very easy step by step instructions.
Even a company that offers great service in unlocking could not unlock my phone and their excuses were very idiot and they also didn't refund me.
I want to say a great THANK YOU and that i will also use you the next time i need unlocking service.Nicosia, Cyprus

All Networks, Factory Code

Mick

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Many thanks, great service, coded delivered in 2 days as stated and worked first time with easy to understand instructions, having tried other companies that failed to deliver I would recommend you anyone.Los Barrios, Spain

T-Mobile UK

Torny L.

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It took me a week to receive the unlock code, but i am glad it did today!!! so happy and so excited! thank you very much for the help! this is my second time using their service, they are amazing! i will sure return when i need for another phone!San Bruno, United States

All Networks, Factory Code

How to unlock Sony ST25i

All we need is the IMEI number of your Sony ST25i phone and the network Provider it's currently locked to (we mean the Original Carrier who sold the phone: they have programmed the simlock restriction).
We will use these details to generate your unique and individual unlock code and give your handset total freedom!
You will be emailed your unlocking code along with easy to follow instructions to remove your current network provider simlock with absolutely no risk of damaging your ST25i phone.

Sony ST25i Unlocking

We have already provided thousands of Sony unlock codes here at Unlock Network, since 2007. We enable you to use your phone on ANY network carrier, local or worldwide.
We are the best in the business. That’s not just talk: Just read through authentic certified Reviews from our customers and you will see we provide excellent customer support and deliver upon it time and time again.
We provide even better service than your official carrier for unlocking your Sony device. Why ? Not only we are simply way cheaper and much faster but we also provide you with a complete set of codes you need plus assistance.

Get your Unique ST25i Unlock Code Now!

You will get manufacturer-issued unlock code(s) directly sourced from Sony.
You will be provided with step-by-step instructions on how to enter your unlock code on your Sony ST25i handset.
Then you simply type the code into your phone and there you are: ST25i Unlocked and ready to accept any GSM provider SIM-card!

Benefits of unlocking your Sony ST25i Phone

- Use your Sony ST25i with any GSM service provider worldwide, accepting any SIM card.
- Save money on roaming charges when you travel abroad (use local SIM card).
- Will not void factory your Sony phone warranty (Official Carriers use exactly the same method)
- Increase the resale value of your unlocked Sony ST25i.
- No need to send your phone away, or to waste time to local store: Quickly remote unlocking by code, from Your home!
- No technical knowledge required: If you can dial a telephone number, you can unlock your Sony ST25i with a code.
- Change your network provider and keep your phone! No need to buy a new handset.
- Permanent Unlock: Once it's unlocked your phone will stay this way forever.